ASTRO VG-871 - Chapter 4 INDIVIDUAL FORMATS for CONTROL COMMANDS

Chapter 4 INDIVIDUAL FORMATS FOR CONTROL COMMANDS
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4.3 SVT [49H]: V timing data registration
Function: This command registers the V timing data of the designated program
number. When the program number is 0, it writes the data into the buffer
RAM.
Sequence: Type 4
Command:
STX
1 byte
02H
SVT
1 byte
49H
Program number
1 to 3 bytes
“0” to “849”
ETX
1 byte
03H
Fig. 4-3-1
Data:
STX
1 byte
02H
TRDT
1 byte
10H
SCAN MODE
1 byte
“0” = NO INTER, “1” = INTER & sync,
“2” = INTER & VIDEO
SERRATION
1 byte
“0” = OFF, “1” = 0.5H, “2” = 1H, “3” = EXOR
ENQ ON/OFF
1 byte
“0” = OFF, “1” = ON
V-TOTAL
4 bytes
Sequence of digits from top: 10
3
, 10
2
, 10
1
, 10
0
V-SYNC
3 bytes
Sequence of digits from top: 10
1
, 10
0
, 10
-1
ENQ-FP
3 bytes
Sequence of digits from top: 10
1
, 10
0
, 10
-1
ENQ-BP
3 bytes
Sequence of digits from top: 10
1
, 10
0
, 10
-1
V-BACK-PORCH
4 bytes
Sequence of digits from top: 10
3
, 10
2
, 10
1
, 10
0
V-DISPLAY
4 bytes
Sequence of digits from top: 10
3
, 10
2
, 10
1
, 10
0
VD-START
5 bytes
Sequence of digits from top: 10
3
, 10
2
, 10
1
, 10
0
, 10
-1
VD-WIDTH
5 bytes
Sequence of digits from top: 10
3
, 10
2
, 10
1
, 10
0
, 10
-1
ETX
1 byte
03H
Fig. 4-3-2